A few years ago now I played Mountain Rock (an early version of Big Day Out) with Dusty Rhodes and the Bluesmobile. The first year we did it we played before The Stranglers whose bassist JJ Burnel was fairly legendary.
The second year we played while Joe Satriani and Stu Hamm were at the side, waiting to go on. A week earlier I had bought Stu Hamm's instructional video, the guy could make his bass osund like any instrument he wanted. Worst day of my life! The MC told me they were listening just before we went on. My fingers froze with nerves and I was reduced almost to playing root notes alone. Didn't even attempt to meet him after that, just drank (as you do).
Opened for Lee Brilleaux and Dr Feelgood a couple of times around then and I seem to remember his bassist being very friendly - I learnt a lot about deep groove from listening to him.